Here's the tip: I took this image in full sunlight by spot metering on the brightest part of the lily - for many cameras the dynamic range extends more in the shadows than in the highlights (when 'middle gray' is considered the reference point) - check your camera's DR tests where available. So if you shoot at low ISO / noise, in RAW, you can bring back more shadow detail, with more accurate colors, than hightligh detail.
In this case I did not change the exposure in PP because the red channel is pretty close to clipping and there was no interesting detail in the shadows. I also liked the way the background was darkened as a result of the higher shutter speed, bringing the flower even more to the viewer's attention - this is usually a very nice secondary effect when shooting flowers...

Thank you Thomas.
This was both cropped and resized - I removed a bit from the top.
When I resize my pictures for the web I always like to divide the length and width by 4 or 3. Whenever you see weird sizes it means I did some cropping